The electron‐impact‐induced fragmentation of 1,2,3‐benzotriazoles and some related compounds

Abstract

Abstract The mass spectra of 1,2,3‐benzotriazole and some derivatives with substituents at the 1‐position and in the benzenering have been examined. The loss of N 2 from the molecularion is characteristic; loss of N 2 plus the 1‐substituent is also common. Structures are proposed for these fragment ions. The relative ease of loss of N 2 , NO and NS from the molecular ions of benzotriazole, 2,1,3‐benzodiazole, 1,2,3‐ and 2,1,3‐benzothiadiazoles is compared.